Objectives
To solve equations
To solve problems by writing equations
An equation is a statement that two expressions are equal. In this lesson you will use equations to model and solve problems.
Essential Understanding You can use the properties of equality and inverse operations to solve equations.
Assume a, b, and c represent real numbers.
Property | Definition | Example |
---|---|---|
Reflexive | a = a | 5 = 5 |
Symmetric | If a = b, then b = a. | If
|
Transitive | If a = b and b = c, then a = c. | If
|
Substitution | If a = b, then you can replace a with b and vice versa. | If a = b and 9 + a = 15, then 9 + b = 15. |